European Journal of Neurology,
Journal Year:
2023,
Volume and Issue:
30(10), P. 3114 - 3123
Published: July 27, 2023
Abstract
Background
and
purpose
The
choroid
plexus
(CP)
clears
harmful
metabolites
from
the
central
nervous
system
as
part
of
glymphatic
system.
We
investigated
association
CP
volume
(CPV)
with
baseline
longitudinal
cognitive
decline
in
patients
Parkinson
disease
(PD).
Methods
retrospectively
reviewed
medical
records
240
newly
diagnosed
PD
who
had
undergone
detailed
neuropsychological
tests
high‐resolution
T1‐weighted
structural
magnetic
resonance
imaging
during
initial
assessment.
CPV
each
patient
was
automatically
segmented,
intracranial
ratio
used
subsequent
analyses.
relationship
between
composite
scores
domain
assessed
using
multivariate
linear
regression
A
Cox
proportional
hazards
model
to
compare
risk
dementia
conversion
CPV.
Results
negatively
correlated
frontal/executive
function
(β
=
−0.375,
p
0.002)
after
adjusting
for
age,
sex,
years
education,
parkinsonian
symptom
duration.
revealed
that
a
larger
associated
higher
(hazard
[HR]
1.509,
0.038),
which
no
longer
significant
domain.
mediation
analysis
demonstrated
effect
on
completely
mediated
by
(direct
effect:
HR
1.203,
0.396;
indirect
1.400,
0.015).
Conclusions
Baseline
is
function,
subsequently
influences
PD.
Neurobiology of Disease,
Journal Year:
2025,
Volume and Issue:
205, P. 106791 - 106791
Published: Jan. 6, 2025
Neurodegenerative
diseases
(ND)
are
characterized
by
the
accumulation
of
aggregated
proteins.
The
glymphatic
system,
through
its
rapid
exchange
mechanisms
between
cerebrospinal
fluid
(CSF)
and
interstitial
(ISF),
facilitates
movement
metabolic
substances
within
brain,
serving
functions
akin
to
those
peripheral
lymphatic
system.
This
emerging
waste
clearance
mechanism
offers
a
novel
perspective
on
removal
pathological
in
ND.
article
elucidates
recent
discoveries
regarding
system
updates
relevant
concepts
model.
It
discusses
potential
roles
ND,
including
Alzheimer's
disease
(AD),
Parkinson's
(PD),
multiple
atrophy
(MSA),
proposes
as
therapeutic
target
for
these
conditions.
European Journal of Neurology,
Journal Year:
2022,
Volume and Issue:
29(10), P. 2895 - 2904
Published: June 17, 2022
Cerebral
amyloid
angiopathy
(CAA)
is
characterized
by
β-amyloid
deposition
in
cortical
and
leptomeningeal
arterioles,
which
might
result
from
glymphatic
dysfunction.
The
aim
was
to
explore
function
CAA
using
the
non-invasive
diffusion
tensor
image
analysis
along
perivascular
space
method.Sixty-three
patients
with
were
prospectively
recruited
together
seventy
age-
sex-matched
normal
controls.
Mini-Mental
State
Examination
Montreal
Cognitive
Assessment
applied
screen
global
cognitive
status.
Magnetic
resonance
imaging
scans
conducted
calculate
index
for
diffusivity
(ALPS
index),
linear
regression
models
used
assess
its
relationships
cerebral
small
vessel
disease
(CSVD)
markers,
status
blood
biomarkers.
Cox
proportional
hazard
role
of
baseline
ALPS
recurrence.Patients
exhibited
a
lower
than
controls
globally
(p
<
0.001).
In
addition,
related
more
enlarged
basal
ganglia
=
0.026),
lacunes
0.001),
higher
white
matter
hyperintensity
Fazekas
score
0.049),
elevated
total
magnetic
burden
CSVD
0.034)
0.001)
as
well
CAA.
During
median
follow-up
4.1
years,
associated
recurrence
0.022).
also
negatively
correlated
serum
soluble
intercellular
adhesion
molecule-1,
neurofilament
light
chitinase-3-like
protein
1
CAA.Patients
showed
impaired
function.
significantly
severity,
impairment
Aging and Disease,
Journal Year:
2023,
Volume and Issue:
unknown, P. 0 - 0
Published: Jan. 1, 2023
The
diffusion
tensor
image
analysis
along
the
perivascular
space
(DTI-ALPS)
method
was
proposed
to
evaluate
glymphatic
system
(GS)
function.
However,
few
studies
have
validated
its
reliability
and
reproducibility.
Fifty
participants'
DTI
data
from
MarkVCID
consortium
were
included
in
this
study.
Two
pipelines
by
using
DSI
studio
FSL
software
developed
for
processing
ALPS
index
calculation.
obtained
average
of
bilateral
used
testing
cross-vendor,
inter-rater
test-retest
R
software.
demonstrated
favorable
inter-scanner
reproducibility
(ICC=0.77
0.95,
P<
0.001),
(ICC=0.96
1,
0.001)
repeatability
(ICC=0.89
offering
a
potential
biomarker
vivo
evaluation
GS
Journal of Neurology Neurosurgery & Psychiatry,
Journal Year:
2023,
Volume and Issue:
94(12), P. 1047 - 1055
Published: June 30, 2023
Background
The
choroid
plexus
(CP)
is
involved
in
the
clearance
of
harmful
metabolites
from
brain,
as
a
part
glymphatic
system.
This
study
aimed
to
investigate
association
between
CP
volume
(CPV),
nigrostriatal
dopaminergic
degeneration
and
motor
outcomes
Parkinson’s
disease
(PD).
Methods
We
retrospectively
searched
drug-naïve
patients
with
early-stage
PD
who
underwent
dopamine
transporter
(DAT)
scanning
MRI.
Automatic
segmentation
was
performed,
CPV
calculated.
relationship
CPV,
DAT
availability
Unified
Rating
Scale
Part
III
(UPDRS-III)
scores
assessed
using
multivariate
linear
regression.
performed
longitudinal
analyses
assess
according
CPV.
Results
negatively
associated
each
striatal
subregion
(anterior
caudate,
β=−0.134,
p=0.012;
posterior
β=−0.162,
p=0.002;
anterior
putamen,
β=−0.133,
p=0.024;
β=−0.125,
p=0.039;
ventral
p=0.035),
except
for
striatum.
positively
UPDRS-III
score
even
after
adjusting
putamen
(β=0.121;
p=0.035).
A
larger
future
development
freezing
gait
Cox
regression
model
(HR
1.539,
p=0.027)
more
rapid
increase
medication
mixed
(CPV×time,
p=0.037),
but
not
risk
developing
levodopa-induced
dyskinesia
or
wearing
off.
Conclusion
These
findings
suggest
that
has
potential
serve
biomarker
baseline
disabilities
PD.
Annals of Neurology,
Journal Year:
2023,
Volume and Issue:
94(4), P. 672 - 683
Published: June 28, 2023
Emerging
pathological
evidence
suggests
that
there
is
an
association
between
glymphatic
dysfunction
and
the
progression
of
Parkinson's
disease
(PD).
However,
clinical
this
remains
lacking.In
study,
index
for
diffusion
tensor
image
analysis
along
perivascular
space
(ALPS
index)
was
calculated
to
evaluate
function.Overall,
289
patients
with
PD
were
enrolled
in
cross-sectional
study.
The
ALPS
found
be
negatively
correlated
age,
severity,
dyskinesia.
In
longitudinal
information
on
a
total
95
5-year
follow-up
examinations
collected
from
Progression
Marker
Initiative,
33
which
classified
into
low
group,
all
others
mid-high
group
based
first
tertile
baseline
index.
results
regression
indicated
significant
main
effect
autonomic
dysfunction,
as
well
activities
daily
living.
addition,
had
faster
deterioration
MDS-UPDRS
part
III
II,
Symbol
Digit
Modalities
Test
Hopkins
Verbal
Learning
Test.
Path
showed
acted
mediator
tTau/
Aβ1-42
cognitive
change
score
at
year
4
5.The
index,
neuroimaging
marker
function,
motor
symptoms,
predictive
symptoms
function.
Additionally,
function
may
mediate
role
toxic
protein
decline.
ANN
NEUROL
2023;94:672-683.
Stroke,
Journal Year:
2024,
Volume and Issue:
55(4), P. 1032 - 1040
Published: March 11, 2024
BACKGROUND:
Recent
studies,
using
diffusion
tensor
image
analysis
along
the
perivascular
space
(DTI-ALPS),
suggest
impaired
(PVS)
function
in
cerebral
small
vessel
disease,
but
they
were
cross-sectional,
making
inferences
on
causality
difficult.
We
determined
associations
between
PVS,
measured
DTI-ALPS
and
PVS
volume,
cognition
incident
dementia.
METHODS:
In
patients
with
lacunar
stroke
confluent
white
matter
hyperintensities,
without
dementia
at
baseline,
recruited
prospectively
a
single
center,
magnetic
resonance
imaging
was
performed
annually
for
3
years,
cognitive
assessments,
including
global,
memory,
executive
function,
processing
speed,
5
years.
volume
disease
markers
(white
hyperintensity
lacunes,
microbleeds)
baseline
changes
markers.
whether
change
over
years
predicted
Analyses
controlled
conventional
metrics
2
(median
mean
diffusivity
[MD]
peak
width
of
skeletonized
MD)
adjusted
age,
sex,
vascular
risk
factors.
RESULTS:
A
total
120
patients,
age
70.0
65.0%
male,
included.
declined
while
no
found.
Neither
nor
associated
marker
progression.
Baseline
global
(β=0.142,
P
=0.032),
(β=0.287,
=0.027),
long-term
memory
(β=0.228,
=0.027).
Higher
lower
(hazard
ratio,
0.328
[0.183–0.588];
<0.001),
this
remained
significant
after
median
MD
as
covariate
0.290
[0.139–0.602];
<0.001).
Change
conversion
0.630
[0.428–0.964];
=0.048),
when
entered
covariates,
association
not
significant.
There
or
to
CONCLUSIONS:
predicts
future
strokes
hyperintensities.
However,
weakening
controlling
suggests
part
signal
may
represent
metrics.
is
predictor
risk.